Exercise device



FIG. 1 is a front, perspective view of the design according to the invention.

FIG. 2 is a rear, perspective view of the design according to the invention.

FIG. 3 is a front view of the design according to the invention.

FIG. 4 is a right side view of the design according to the invention.

FIG. 5 is a bottom view of the design according to the invention.

FIG. 6 is a left side view of the design according to the invention.

FIG. 7 is another front, perspective view of the design according to the invention; and,

FIG. 8 is a rear view of the design according to the invention.

The portions in even broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an exercise device, as shown and described. 